Yamaha HPDI good on fuel? Opinions?

[mxz]

How are the Yamaha 225 HPDI's on gas compared to the 225 Etecs and Opti's? Are the HPDI's good motors? I know you can really wake them up with Hydrotec parts.

[Jamescole]

i think the HPDI is the worst on gas out of all you mentioned there.. but its still not bad compared to non direct injection EFI. I love my HPDI though i had a stock 250 and it was very smooth running and worked great then i bought a hydrotech version and its a monster in comparison worse on fuel too.. but i guess that can be expected.

[David]

All were close enough that it wouldn't matter when BWB magazine tested them.
Compared to a carb fishing motor, very good, way better than your PM. I heard the Yammy has a lot of filters to service, but that's just work...

[Superbender]

I have to agree with James as not the best on fuel,has a ton of filters:eek:but it would be my first choice then the merc

[DoktorC]

I heard the Yammy has a lot of filters to service, but that's just work...

The filters can be a source of maintenance and if you're buying a used motor you're going to want to start fresh with at least the three easy ones. That being said I just serviced an 862 hour 2003 Z250 with original filters (and water pump lol). IMO the Yamaha 10 micron filter in the boat is a must as well as ethanol free fuel....keep good clean fuel going in and you won't have filter issues.

[tres]

Eroshibend.... LMAO...
but you went 4 stroke....

[DoktorC]

Eroshibend.... LMAO...
but you went 4 stroke....

Too hard to boost an HPDI :)

[mxz]

Do they need premium or do they run on 87?

[Markus]

The HPDI uses more fuel than the Opti and the E-Tec at the bottom-end and mid range, because the HPDI does not have a stratified mode to run lean.

At WOT, there is no major difference.